|Author(s)||Collection number||Pages||Download abstract||Download full text|
|Kolomiiets A. B., Palamar O. O., Shakhbazov Ya. O., Shyrokov V. V.||№ 1 (58)||11-19|
An analysis has been carried out for the methods used to make grinding wheels with diamond tools. It has been determined that among the known methods of setting the greatest application for all types of production has a simple and universal method – turning by diamond tools, which should be pertained to the processes of high-speed destruction of the brittle material of the working surface of the grinding wheel. The given general waste of grinding wheels while their setting showed that the losses of grinding wheels makes up greater part of their useful volume. The analysis has shown that the mode of setting and the type of tool determines not only the stability of the grinding wheel, but also the rate of its useful use. It has been noted that ensuring the necessary roughness of the treated surface during grinding involves creating an ordered relief on the working surface of the grinding wheel. The creation of ordered relief is possible by micro-destruction of abrasive grains while setting of a grinding wheel by a diamond tool. In the case, the control of the destruction nature of the working surface of the grinding wheels can be achieved by limiting the contact load concentration within the abrasive grain or transferring it to the grinding wheel’s bond. It has been shown that the solution of the problem depends on the ratio between the impact main parameters, such as the periods of crack formation and the shock wave passage through the abrasive grain. The research has demonstrated that in the process of grinding wheels’ setting by the method of diamond turning, the working layer of the grinding wheel breaks mainly in grains, what allows controlling the degree of their destruction and the quality of the treated surface while grinding.
Keywords: grinding, grinding wheel, abrasive grains, methods of setting, diamond pencil, roughness, micro-destruction, macro-destruction, period of increase of impact force.